PMI Guide. Learn the Basics : Mortgage & Home Loan

Many borrowers want to know how PMI actually works before they speak with a lender. They are concerned that this added cost may affect their monthly payment longer than expected. This guide explains the basics so you can move forward with confidence.

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What Is PMI on a Mortgage? A Simple Explanation for Borrowers.

SHORT ANSWER
PMI is insurance that protects the lender, not the borrower, required on most conventional loans with less than 20% down. Cost commonly runs 0.5% to 2% of the loan amount annually, depending on credit score and down payment. PMI can be removed once the loan reaches 80% to 78% of its original value. Smart Loan Savings Educational Content

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PMI FactorQuick Fact
Who It ProtectsThe lender, not the borrower
Cost0.5% to 2% of the loan amount annually
Removal Threshold80% requested, 78% automatic, or the loan’s midpoint
Tax DeductibilityRestored in 2025 legislation for borrowers who itemize

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PMI Deep DiveWhat This Means for Your Loan
Who PMI Actually ProtectsA common misconception is that PMI protects the borrower somehow, when in reality it protects the lender if the loan defaults. Lenders require PMI when a down payment falls below 20%, since a smaller down payment leaves the lender with more risk. The premium is added to the payment, but the coverage never pays out to the borrower under any circumstance. This is why PMI can be removed once enough equity builds.
How PMI Cost Is CalculatedPMI cost is generally calculated as a percentage of the loan amount, commonly running from about 0.5% to 2% annually depending on down payment, credit score, and loan type. On a $300,000 loan at a 1% rate, that works out to roughly $3,000 a year, or about $250 added monthly. A lower credit score or smaller down payment both push this percentage toward the higher end of the range.
Conventional PMI vs. FHA’s MIPConventional PMI and FHA’s mortgage insurance premium sound similar but follow different cancellation rules. Conventional PMI must automatically terminate once the loan reaches 78% of its original value under federal law. FHA’s annual MIP, by contrast, is permanent for the life of the loan on any loan originated after June 2013 with less than 10% down. The only way to exit FHA MIP is refinancing into conventional once equity has built up.
The Homeowners Protection ActThe Homeowners Protection Act is the federal law governing when conventional PMI has to end, giving borrowers two paths to remove it. A borrower can request cancellation in writing once the balance reaches 80% of the original value, provided payments are current. If never requested, the law requires automatic termination at 78%, as long as the loan is current. A third protection applies regardless: PMI must end at the loan’s midpoint, year 15 on a 30-year loan.
PMI and Your Tax ReturnPMI premiums and your tax return interact in a way that’s changed recently: under new 2025 legislation, PMI became tax-deductible again for borrowers who itemize, the same treatment mortgage interest already receives. This deduction had previously expired for several years before being restored. Whether this benefits a specific borrower depends on the same itemizing threshold that determines the mortgage interest deduction. A tax professional can confirm whether this applies to your return.
PMI OVERVIEW — PMI protects the lender, not the borrower, and is required on conventional loans with less than 20% down. Cost commonly runs 0.5% to 2% of the loan annually, based on credit score and down payment. Under the Homeowners Protection Act, a borrower can request cancellation at 80% LTV, with automatic termination at 78% or the loan’s midpoint. FHA’s MIP follows different, often permanent rules instead.

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PMI FactorWhat Affects Your PMI
Credit ScoreA lower credit score commonly pushes PMI cost toward the higher end of the typical 0.5% to 2% range.
Down Payment or EquityPMI is generally required whenever a conventional down payment falls below 20%, and can be removed once equity reaches 20% or more.
Emergency Cash ReserveLenders check that your file can support the full payment including the added PMI premium, not just principal and interest.
Your Personal IncomeIncome documentation isn’t directly tied to PMI, though it supports your overall ability to sustain the full monthly payment PMI adds to.
Loan TypePMI applies specifically to conventional loans; FHA uses its own separate mortgage insurance premium structure with different cancellation rules.
Sources Used on This PageHomeowners Protection Act of 1998 — 12 U.S.C. §§ 4901-4910 | Consumer Financial Protection Bureau — consumerfinance.gov
This page is provided for educational purposes only. Smart Loan Savings Educational Content
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People Also AskWhy This Question Matters
When can I remove PMI from my mortgage?You can request PMI cancellation in writing once your loan balance reaches 80% of the original home value. Your servicer must automatically terminate PMI once the balance reaches 78%, as long as you’re current on payments. PMI must also end at the midpoint of your loan’s amortization schedule regardless of either threshold.
How much does PMI typically cost?PMI commonly costs between 0.5% and 2% of the loan amount each year, depending on your credit score and down payment. A lower credit score or smaller down payment both push this cost toward the higher end of the range. The premium is recalculated periodically, so the dollar amount shrinks as your loan balance declines.
Is FHA mortgage insurance the same as PMI?FHA’s mortgage insurance premium works differently from conventional PMI and follows its own separate rules. FHA’s annual MIP is permanent for the life of the loan on most loans with less than 10% down. Refinancing into a conventional loan is generally the only way to exit FHA MIP under those terms.
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Mortgage Basics GuideSimple explanations of core terms like principal, interest, escrow, and PMI
Income and Employment RequirementsHow income, self-employment, bonuses, and job gaps affect your approval
Credit & ApprovalCredit score requirements, how to improve your score, and how lenders approve a file
Homebuying TipsPreparing for a mortgage, choosing the right program, and avoiding common mistakes
Loan ComparisonsSide-by-side comparisons to help you see which loan program actually fits
Refinance GuidesRate-and-term, cash-out, and streamline refinance options explained plainly
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